cpin6

Multifunctional test pen (based on CW32)

Overview

This project involved building a CW32-based multi-functional test pen,

based on the schematic diagram provided by Engineer He from the training camp. Several components and circuits were modified. Specifically:
1. The LDO chip in the 3.3V voltage regulator circuit was replaced with an RT9013

. 2. Only the pull-up resistor was retained in the five-way rocker switch circuit; the filter capacitor was removed.

3. Some modifications were made to the display backlight circuit.

4. The board size was slightly increased by 4mm; the original width was 14mm, which was increased to 18mm, while the length remained 100mm.

The casing was designed using LCSC EDA.

The following is a picture of the actual product.
Due to cost considerations, the Bluetooth chip, antenna, LED lighting, and buzzer were not soldered.

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2026-03-27 04:01:11

[Qinheng Trial] CH559EVT Trial 2: Development Environment
Suddenly I remembered that it has been 50 years since humans first landed on the moon. 50 years ago, the space race between the United States and the Soviet Union pushed technology to the extreme. Rec
Mid-Autumn Festival "State Banquet": Take a photo of the domestic components on the board and win a small gift
The Mid-Autumn Festival is coming soon. Welcome to this "state banquet" in the jar. Bring your mobile phone and take close-up photos of domestic MCU, ADC, FPGA, gyroscope, optocoupler, negative output
Urgent!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! (High score please help!!!) There is always a problem getting the ClassID corresponding to the ADO connection object in EVC
My program always fails when it comes to getting the classID corresponding to the ADO object. I don't know why? Please give me some advice. m_ProgID = _T ("ADOCE.Connection.3.1"); CLSID m_ClsID； hr =
Getting Started with C Programming in Linux
I'm sorry, I was a bit busy recently. I will upload information more often in the future.
ATmega16-ICCAVR7.14-Proteus7.5
[i=s]This post was last edited by paulhyde on 2014-9-15 03:42[/i]
I would like to ask the forum, what should we discuss in the industrial control section in May?
April, the month of spring and blooming flowers, has passed, and now we are entering May, the month of summer. What do we industrial control enthusiasts want to discuss? Please feel free to discuss!

Datasheet More

Circuits More